:root {
  --primary-color: #00bcd4;
  --secondary-color: #333;
  --text-color: #666;
  --dark-gray: #5a5a5a;
  --light-gray: #f5f5f5;
  --border-color: #e0e0e0;
  --hover-color: #00acc1;
  --max-width: 1400px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: #fff;
  line-height: 1.6;
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text-color);
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--hover-color);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.page-content {
  min-height: calc(100vh - 400px);
  padding: 0;
  background-color: #fff;
}

.page-title {
  font-size: 2.5em;
  color: var(--secondary-color);
  margin-top: 10px;
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 3px solid var(--primary-color);
  font-weight: normal;
}

.section {
  margin-bottom: 50px;
  padding: 40px 0;
}

.section-title {
  font-size: 2em;
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-weight: normal;
  padding-bottom: 10px;
  border-bottom: 2px solid #e0e0e0;
}

.card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 0;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: none;
  transition: box-shadow 0.3s ease;
}

.card:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.btn {
  display: inline-block;
  padding: 10px 25px;
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.95em;
  transition: background-color 0.3s ease;
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.btn:hover {
  background-color: var(--hover-color);
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  
  .page-title {
    font-size: 2em;
  }
  
  .section-title {
    font-size: 1.5em;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
}

